Fortuna Castle

Go down the left path to the south to run into a comboable statue that only Dante can use. Bring your stylish meter up to SS and you'll unlock a blue orb fragment to add to your collection. Continue south to the next area and you'll run into a new enemy, the blitz. While the blitz teleports wildly around, jump around and unload shotgun blasts to slow it down. Do not bother trying to attack the enemy with melee strikes until the blitz loses its electric aura and stops teleporting. When the blitz is in its weakened state, unload your strongest ground combos without fear of a counter attack. When you see the blitz begin to regain its electric shield, back far away and restart the pattern.

Keep south until you reach the upper level of the grand hall. The lower level is frozen over, but there's a doorway to the east that leads to the gallery. Move through the gallery and to the library where you'll find an assortment of angelo enemies including many biancos and a couple of altos. Stick mostly to sword strikes to clear out the bianco angelos before moving on to the more deadly altos. When the library is clear, look for a door to the south and drop down the tall stairway in the center of the room. At the base of the stairs is the entrance to another secret mission.

Unbreakable Secret Mission 09

Start by first singling out the three chimera seeds, at least to the best of your ability. If you can take them out you can avoid having to fight chimera-infected assaults. Jump around a lot and use the shotgun to knock back the assaults. When you defeat the first batch of baddies, a second set of three assaults appears. Unfortunately, they come pre-infected by the chimera, so you'll have to deal with them as they come. Stick to shotgun blasts and air attacks with the Gilgamesh weapon to fend 'em off. Keep your distance and you'll be rewarded with a blue orb fragment.